Irritation

Why is it that I make people uncomfortable?  Why is it that I did nothing wrong and I make people uncomfortable?  He cheated, he lied, he screwed me over - and I make people uncomfortable. 

I got a call today - I was told that I make the soon to be Ex-SIL too uncomfortable to be able to go to a girly pre-wedding party with a group of friends.  

Yesterday I was told I am not to attend the wedding of said bride.  

Why?  Why is it that I am causing so many problems?